In article
<Pine.A41.4.10.10003180226570.134090-100000 at acs6.acs.ucalgary.ca>, Neal
Robert Melvin <nrmelvin at ucalgary.ca> wrote:
> I'm tryin to deglycosylate a membrane
> protein, which I then plan to examine on a western blot to determine what
> proportion of its molecular weight is due to N-linked oligos.....
Dear Neal,
I did this with a single-pass membrane protein, and what I did was to
IP as usual from a denaturing extract, wash a few times in Triton buffer,
then add the deglycosylation buffer to the beads-antibody-antigen complex,
followed by the enzyme, in this case EndoH. I think I treated as usual,
then added more denaturing buffer, boiled, diluted out, and re-IP'd. You
don't have to do this last, probably, just spin out and r/s in sample
buffer. Bottom line - you should be able to deglycosylate on the beads.
Kevin